Mother Countess Juliane of Nassau-Dillenburg Born 14 May 1606, Kassel ( 1606-05-14 ) Died 28 May 1650(1650-05-28) (aged 44)Dessau Similar Princess Henriëtte Amalia of Anhalt Dessau, Princess Johanna Charlotte of Anhalt Dessau, Duchess Sabine of Württemberg |

Agnes of Hesse-Kassel (14 May 1606 in Kassel – 28 May 1650 in Dessau) was a princess of Hesse-Kassel by birth and by marriage Duchess of Anhalt-Dessau.
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Life
Agnes was a daughter of Landgrave Maurice of Hesse-Kassel (1572-1632) from his second marriage to Juliane (1587-1643), the daughter of Count John of Nassau-Dillenburg. She was raised together with her siblings. She spoke six languages and composed music.
On 18 May 1623 she married Prince John Casimir of Anhalt-Dessau (1596-1660). During the Thirty Years' War, she managed to sothen the plight of Anhalt-Dessau by negotiating with the generals, both orally and in writing. She was considered a keen economist and mathematician. In 1645, she built a fortified house in Nischwitz, which was later developed into Oranienbaum Castle.
Issue
From her marriage Agnes had the following children: